Jt6m vs fsk441 software

Jt6m is optimized for 6m meteor scatter but is equally effective with tropo, weak es and scatter modes of propagation jt6m uses 44tone fsk frequencyshift keying with a sync tone and 43 possible data tones, one for each character in the supported alphanumeric set. Aug 11, 2015 there are 2x software packages available to decode the mgm modes mentioned in this article, which include fsk441, msk144, jt6m and iscat more on these below. December 2001 qst article on wsjt by joe taylor k1jt. Its a case of tuning in to a jt65 frequency, waiting for oneminute transmit cycle to complete, and looking for a cq message to reply to. Jt6m, introduced in late 2002, is intended for meteor scatter and other ionospheric scattering of signals, and is especially optimized for the 6meter band. When i run wsjt in monitor mode, i know i can right click around what looks like a ping and it will try to decode it but i dont see it always decoding if i just let it run through the cycles. When an fsk441 or jt6m reception period has finished the program looks for signal enhancements produced by shortlived reflections from meteor trails. The version 3 users guide and reference manual contains the best overview of the fsk441 mode. These files are ontheair recordings of meteor pings in fsk441 mode, pings and ionospheric scatter signals in jt6m mode, and eme signals in the jt65 modes.

The main category is jt65 software that is about jt65 digital mode software. The program contains two displays which show the received signal. These two modes are in use mostly on 6m jt6m and 2m fsk, with 4m dividing opinion as to which was best at that frequency. Tips for dxers gary hinson, the digital modes are being actively developed and the protocolsoperating conventions are still evolving. With mentioning is jtdx which is aimed at hf6m users and the older wsjt non x. The wsjt project currently includes five programs designed for amateur radio communication using state of the art digital techniques. The program was initially written by joe taylor, k1jt, but is now open source and is developed by a small team. A cursory analysis would suggest that fec adds complexity to a message that must limit the minimum reflection length that can be decoded vs. This link is listed in our web site directory since wednesday jul 2 2014, and till today wsjtx has been followed for a total of 3331 times.

There are alternative software packages available for jt65 including multipsk a commercial package developed by f6cte, and jt65hf a freeware package developed by w6cqz. Typical applications include meteor scatter, eme moonboun. Mshv is a radio amateur program for sending and receiving digital modes like fsk315, fsk441, ft8, iscat, jtms, jt6m, jt65, msk144, and pi4. Post by joe taylor several people have asked for an update on development of the fast modes in wsjt and wsjtx. Jt6m optimized for meteor and ionospheric scatter at 6. These packages are wsjtx and mshv by lz2hv, mshv is the simplest software package to setup and use. Msk144 mskms jtms fsk441 fsk315 iscat jt6m ft84 jt65 pi4 system requirements. Weak signal communication software wsjtx, wsjt, map65, and wspr are opensource programs designed for weaksignal digital communication by amateur radio. Radio amateur program for sending and receiving digital modes like fsk315, fsk441, ft4, ft8, iscat, jtms, jt6m, jt65, msk144, mskms and pi4 by christo, lz2hv. The digital signal processingdigital signal processing. Msk144, and a lean november it certainly has been a busy month at gm4fvm, but not on the bands. With meter scatter my power and antenna are not suitable for successful transmitting but good enough for listening. Msk144 jtms fsk441 fsk315 iscat jt6m ft8 jt65 pi4 mshv developed by lz2hv christo tested by sp9hwy jurek and g0lff dick ideas about appearance oz2m bo linux binaries oz1pif peter.

Jt65jt9 data mode software for hf amateur radio weblog by. Finally got my antenna back up today, decided to take a browse through the bands. You can often hear such pings when they occur, and they can be seen as spikes on the green line and brighter colors in the waterfall spectrum. These two modes are in use mostly on 6m jt6m and 2m fsk, with 4m. Wsjt amateur radio software alternative software for jt65. Jt6m and wsjtx i have been playing with the new wsjtx program. Listed under the software weak signal category that is about weak signal software. Blog post 9 fsk441 and jt6m high speed meteor scatter modes by k1jt wednesday august 5, 2009. Im confused, are these two distinctly different modes. Mshv amateur radio software lz2hv amateur radio website. The program was borrowed from the open source software k1jt. Jun 17, 2014 unlike wsjt which if set to wide decode only decodes the strongest message, w4cqzs jt65hf software will decode all messages in the 2000 hz receive bandwidth window which is shown on the waterfall. Jtms, fsk441 for meteor scatter iscat, jt6m for ionospheric scatter. Jt6m dot org here you will find many tips and find others to work on your side of the atlantic.

Msk144 jtms fsk441 fsk315 iscat jt6m ft8 jt65 pi4 mshv developed by lz2hv christo tested by sp9hwy jurek and g0lff dick ideas about appearance oz2m bo linux binaries oz1pif peter acknowledgements to. New meteor scatter program mshv i have just aquired a copy of mshv which is a slightly different version of wsjt and uses wsjts software code. Ive been running fsk441 on the wsjt program for about a week now, although ive not made any contacts yet. Jun 28, 2016 instead the bands are full of jt6m and fsk441, modes which are now rendered obsolete by iscat and jtmsk. Although joe provides the software free of charge, it does not come without cost.

This way, i can run the software around the clock without disturbing the xyl. Nw7us just made a successful twoway digital exchange with hb9ari. Typical applications include meteor scatter, eme moonbounce, and qrp communication at hf. Radio amateur program for sending and receiving digital modes like fsk315, fsk441, ft4, ft8, iscat, jtms, jt6m, jt65, msk144, mskms and pi4 by. Modes jtms, fsk441, iscat, jt6m, jt65, jt4, echo, cw. There are 2x software packages available to decode the mgm modes mentioned in this article, which include fsk441, msk144, jt6m and iscat more on these below. Home wsjtx wsjt map65 wspr simjt program development references support. Ill be taking some time off over the holidays and i want to devote some of that time to operating jt65 on hf, primarily on 160. When transmitted messages include at least one space, the fsk441 decoding algorithm uses that space character as a syncword for zerooverhead synchronization 30 12. Extract the archive file with its containing folder and then create a. Youll see from the above screenshot that there is a waterfall as with psk31 that shows multiple qsos. His software allows even a modest station to enjoy several weak signal modes.

Weak signal communication software wsjt, map65, wspr, and wsjtx are opensource programs designed for weaksignal digital communication by amateur radio. Wsjtx, wsjt, map65, and wspr are opensource programs designed for. Since i started using jt65hf software, i have had the volume set to zero on my radio. Fsk441 uses frequency shift keying of four tones at a rate equivalent to 441 baud. Description wsjtx implements communication protocols or modes called ft4, ft8, jt4, jt9, jt65, qra64, iscat, msk144, and wspr, as well as one called echo for detecting and measuring your own radio signals reflected from the moon. When using the jt65hf software, youll need to adjust your thinking about the waterfall display.

The software is fully compatible with the modes in wsjt software. Map65 is a wideband receiver using jt65 digital signals primarily for eme earthmoonearth or moonbounce communications on the vhfuhf bands. The pinjockey page wont do you any good for jt6m and fsk441 skeds because its north america stations. Dec 01, 2016 it is msk144 which seems to have most appeal for me. Jt65 digital mode software category is a curation of 9 web resources on, wsjtx, jt65hfcomfort, jt65hf by w6cqz. Jt65a and jt65hf software weak signal digital mode on hf. Fsk441 and jt6m work to an exceptional degree with the burst type of signals found with meteor scatter. The wsjt software by joe taylor is the most popular for computeraided ms work, and includes a number of fast and slow protocols, optimised for different types of propagation.

Hflink is the international resource for high frequency communications, hf digital messaging, emergency disaster relief, interoperative hf communications, hf networking, ham radio. Getting started in meteor scatter ms pre ft8 geekshed. Jt65 for eme at vhfuhf, and for qrp operation at mfhf. Version 10 implements modes jtms, fsk441, fsk315, iscat, jt6m, jt65, and jt4. Jt6m is a form of wsjt that is optimised for 6 metre operation hence the 6m part of the name. The jt65hf software may be obtained from sourceforge. One, not unreasonable, reason for the continuing popularity of fsk441 and jt6m in eu is the need in region 1 contest for 6digit locator exchanges along with serial numbers, this has been addressing in wsjtx ft8, ft4, and msk144 modes with eu context mode. Let us hope that this time jt6m and fsk441 are quickly abandoned. Optimized for meteor scanner, ionospheric scatter, and. It can be used together with linrad by sm5bsz or with direct input from a soundcard or.

There is no place in this latest trial version of wsjtx for either fsk441 or jt6m. The digital signal processing techniques in wsjt make it substantially easier for amateur radio operators to employ esoteric propagation modes, such. I am using fsk441 for many years now on 4m, 2m and 70cm and wanted to see if msk144 is bringing something new to me. Meteor scatter communications for amateur radio meteor scatter communications is a form of radio propagation used by ham radio operators using with modes including high speed morse and wsjt fsk441 for contacts over distances up to about 2000km. Normal usage requires a standard ssb transceiver and a personal computer with soundcard, or the equivalent. It stands for weak signal communications, by k1jt, and includes more than one communication mode.

This code and symbol spreading implementation is key to its robustness under less than ideal conditions. Aug 17, 20 50 mhz aircraft scatter using jt6m mode and airscout software posted on august 17, 20 by g0isw on saturday 10th and sunday 11th august 20 i was using the wsjt software data mode jt6m on 50. The tutorials main emphasis is on the decoding of signals received by wsjt. When transmitted messages include at least one space, the fsk441 decoding algorithm uses that space character as a syncword for zerooverhead synchronization30. Map65 implements a wideband receiver for jt65 signals, optimized for eme on the vhfuhf bands.

Frustrated by the lack of software which can produce fsk and jt6m and work with the. As soon as the programs have been downloaded we can start with the installation process. Wsjt multi tone frequency shift keying for meteorscatter, jt65 and jt6m. Jt65hf any versionmode of jt65a is a time kller to say the least. Download mshv debian linux binaries 32 and 64bit compiled by. Art of copying ms pings the use of wjst fsk441 in 144 mhz band a typical meteor scatter qso experience seven. The program also offers a measure mode for testing sun noise and the like, and an. It sure would be great if we could revive the local 6m early morning digital activity we had a while back. It is modified wsjtx software forked from wsjtx r6462. If this is the first time of installing wsjt on a computer the program will suggest installing itself in the folder c. Jul 19, 2017 the advent of this technology and software has allowed for the explosion of smaller eme station to get on the air and start working folks, where before, their signal strength was not loud enough to be heard by your ears. Nov 04, 20 jt65jt9 data mode software for hf posted on november 4, 20 by g0isw in recent months my ability to work dx on the hf bands has been utterly transformed thanks to some exciting new software for the jt65jt9 weak signal data modes.

As a result, most operators on the vhf bands use older versions of wsjt wsjt10 in particular, to generate their signals, and those older pieces of software do not support cat. Nw7us, using wsjt 32 cq october 2010 visit our web site. Jt65a is a weak signal digital mode for ham radio qso. Ft4 dx contest 2020 is scheduled for the weekend of february 29 march 1, 2020. Microsoft windows xp, windows 7,8,10 32 or 64 bit, linux fedora red hat, ubuntu debian. Ive installed it, but have not yet done any serious operating. Wsjt multi tone frequency shift keying for meteorscatter. Wsjt is the original program, first released in 2001. This is curt black, wr5j, with the educational radio net please standby for a fsk441 digital qst. My jt65 digital simulator, which has accurately predicted the performance of previous versions of the software, correctly decodes about 50% of simulated rx files with the v4. The package of sample files is about 22 mb in size.

Wsjt was the original program 2001 release date using the jtms, fsk441, fsk315, iscat, jt6m, jt65, and jt4 modes. We should be comparing jt6m and scat with each other during typical weak signal scatter work, possibly with enhancements due to aircraft scatter meteor. To decode the received signals from the display, you must click with the mouse in the center of the received ping. Normal usage requires a standard ssb transceiver and a personal computer with soundcard. Mt63 distributes the encoding of each character over a long time period, and over several tones.

This site describes the use of hf frequencies for jt65a. One of the issues that was present in the jt software is the long transmit and receive cycles. The wsjt software package incorporating fsk441, jt6m, jt65 and jt2jt4wspr experimental modes can be downloaded from joe taylor k1jts website. Jt6m, iscat jtms and fsk are the fast modes designed for weak signal meteor and ionoscatter. Wsjt is a computer program used for weaksignal radio communication between amateur radio operators. Almost the same location of controls was used for easy operation. Jt65 hf jt65a hf frequencies frequency information digital. The algorithms, source code, lookandfeel of wsjtx and related programs, and protocol specifications for the modes fsk441, ft8, jt4, jt6m, jt9, jt65. Only decoders and generators were used from k1jt wsjt and. Mshv amateur radio software mshv supported working modes.

The mt63 mode is very tolerant of mistuning, as most software will handle 120 hz tuning offsets under normal conditions. How to use meteor scatter communications in ham radio. Simjt is a new program april 2004 that allows you to generate jt65 and cw wave files with specified message content, sn, and other relevant parameters. If you have an old version of software, please delete the existing shortcut on the desktop if there is one. Generally the reflections are fairly strong, but the reflection very short in duration in the order of a. The jt44 mode allows copy with signals well below the threshold required for cw qsos. The jt65 form of wsjt is aimed at very low signal communications for applications like eme or long distance troposcatter. Instead the bands are full of jt6m and fsk441, modes which are now rendered obsolete by iscat and jtmsk. Subscribe to mshv group link to the mshv group information ft8 dx contest 2020 is scheduled for the weekend of april 11 april 12, 2020. The minos logging software will consider the qso incomplete if you leave the serial rx box blank or insert 000 and you will have to click force, then in the pop.